Php vb.net regex.matches未返回所有匹配项

仅返回：

在位置0处找到“9#Left#Itema Desc”

使用Expresso返回测试上面的vb模式：

1:9

2:#左#

3：项目A

4:Desc

此外，此PHP正则表达式还返回四项：

Dim pattern As String = "^[ \t]*(\d+)[ \t]*(#[^#]*#)?[ \t]*(\w+)[ \t]?(.*)$"
Dim sentence As String = "9 #Left# Itema Desc"

For Each match As Match In Regex.Matches(sentence, pattern)
  Console.WriteLine("Found '{0}' at position {1}", match.Value, match.Index)
Next

我做错了什么

提前谢谢

多亏了Ark kun，我的问题确实是群体——以下是有效的代码：

preg_match_all('/^[ \t]*(\d+)[ \t]*(#[^#]*#)?[ \t]*(\w+)[ \t]?(.*)$/m', $in, $matches, PREG_SET_ORDER);

---

结果在逻辑上是正确的。您已经编写了“整行”正则表达式，并且

regex.Matches

方法找到了一个匹配项-整行。 您可能需要的是

匹配。捕获
属性：

Dim pattern As String = "^[ \t]*(\d+)[ \t]*(#[^#]*#)?[ \t]*(\w+)[ \t]?(.*)$"
Dim sentence As String = "9 #Left# Itema Desc"

Dim match As Match = Regex.Match(sentence, pattern)
If match.Success Then
  Console.WriteLine("Matched text: {0}", match.Value)
    For ctr As Integer = 1 To match.Groups.Count - 1
      Console.WriteLine("   Group {0}:  {1}", ctr, match.Groups(ctr).Value)
    Next
 End If